python编写一个类，实现添加元素（如果存在则不添加），删除元素，弹出元素（pop）,集合差集运算，集合并集运算，判断两个集合是否相等，>=运算符重载（集合包含关系），支持内置函数len，清空集合所有元素

好的，我来为您编写一个类，实现上述功能：

class MySet:
    def __init__(self, elements=None):
        if elements is None:
            elements = []
        self.elements = elements

    def add_element(self, element):
        if element not in self.elements:
            self.elements.append(element)

    def remove_element(self, element):
        if element in self.elements:
            self.elements.remove(element)

    def pop_element(self):
        if self.elements:
            return self.elements.pop()

    def difference(self, other_set):
        return MySet([element for element in self.elements if element not in other_set.elements])

    def union(self, other_set):
        return MySet(self.elements + [element for element in other_set.elements if element not in self.elements])

    def is_equal(self, other_set):
        return set(self.elements) == set(other_set.elements)

    def __ge__(self, other_set):
        return set(self.elements).issuperset(set(other_set.elements))

    def __len__(self):
        return len(self.elements)

    def clear(self):
        self.elements = []

示例代码：

# 初始化一个集合
my_set = MySet([1, 2, 3, 4, 5])

# 添加元素
my_set.add_element(6)
my_set.add_element(6)  # 已存在的元素不会被添加
print(my_set.elements)  # [1, 2, 3, 4, 5, 6]

# 删除元素
my_set.remove_element(4)
print(my_set.elements)  # [1, 2, 3, 5, 6]

# 弹出元素
print(my_set.pop_element())  # 6
print(my_set.elements)  # [1, 2, 3, 5]

# 集合差集运算
other_set = MySet([3, 4, 5, 6, 7])
print(my_set.difference(other_set).elements)  # [1, 2]

# 集合并集运算
print(my_set.union(other_set).elements)  # [1, 2, 3, 5, 4, 6, 7]

# 判断两个集合是否相等
print(my_set.is_equal(other_set))  # False

# >= 运算符重载
print(my_set >= other_set)  # False

# 内置函数 len
print(len(my_set))  # 4

# 清空集合所有元素
my_set.clear()
print(my_set.elements)  # []